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Radissa Dzaky Issafira
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Department of Mechanical Engineering, Faculty of Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur 1st floor Giri Reka Building, East Java, Indonesia Jl. Raya Rungkut Madya, Gunung Anyar Surabaya Jawa Timur 60294 Indonesia
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Biomedical and Mechanical Engineering Journal
Published by Universitas Pembangunan Nasional Veteran Jawa Timur
ISSN : -     EISSN : 27761983     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
The Biomej Journal is published by the Mechanical Engineering Study Program, Faculty of Engineering, East Java "Veteran" University, Surabaya-Indonesia. Biomej is an open-access peer review journal that mediates the dissemination of academics, researchers, and practitioners in the field of mechanical engineering and accepts journal publications from all over Indonesia. Biomej aims to provide a forum for national and international academics, researchers and mechanical engineering practitioners to publish original articles. All accepted articles will be published and will be freely available to all readers with wide visibility. The scope of the Biomej Journal is including widely topics in engineering such as: 1. Biomedical engineering 2. Tribology 3. Modelling 4. Finite ELement Method 5. Material Science 6. Mechatronics 7. Structural and Machiine Design 8. Stress Analysis 9. Renewable Energy 10. Structural Mechanics 11. Thermodynamics 12. Material Processing 13. Fatigue and Air Conditioning 14. Heat Transfer 15. Manufacturing 16. Fluid Mechanics 17. Combustion 18. Aeodynamics 19. Environmental Protection 20. Acoustic and Noise 21. Energy Studies 22. Refrigerationand Air 23. Conditioning 24. Engines and Turbines 25. Thermodynamics 26. Earth Science 27. Natural Hazards 28. Food Technology Processing
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 14 Documents
 1   2 
Search results for , issue "Vol. 2 No. 1 (2022): BIOMEJ" : 14 Documents clear
Feasibility Study on Performance of Heat Exchanger-001 Refinery in Pusat Pengembangan Sumber Daya Manusia MIGAS Cepu E Saputro; R A Santoso; N N Saraswati; M Rochim
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 2 No. 1 (2022): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

PPSDM Migas Cepu is one of the oil and gas industries in Indonesia. Their process requires Heat Exchanger for pre-heating purposes. The Heat Exchanger cannot work optimally because of the impurities attached to the walls shell and tube. Sometimes the impurities are attached to the walls of the shell and tube, so it makes can’t work optimally in this industry. For that reason, the purpose of this calculation is to find out the heat efficiency during the process. Heat efficiency is the ratio of the amount of heat that moves from a high-temperature fluid to a lower temperature fluid in a certain time unit which can show the performance of a Heat Exchanger. The result show that the clean overall coefficient (Uc) and design overall coefficient (Ud) are 7,4301 Btu/ft2.jam.oF and 7,2517 Btu/ft2.jam.oF. For dirt factor (Rd) are 0,0033 ft2.jamoF/Btu. The Pressure Drop is 0,0448 Psi for Tube and 0,0035 Psi for Shell. The value of the Heat Efficiency is 82,3840 %. This means according to the results of these parameters, it can be concluded that the Heat Exchanger-001 is still possible to operate.
Cost Estimation of Distillation Unit at Dimethyl Ether Plant Based on Production Capacity E Saputro; B A Sanjoyo; W Ramadhanti
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 2 No. 1 (2022): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

The aim of this research is to determine the impact of production capacity in determining distillation cost estimation on the dimethyl ether plant design. The estimation of equipment costs are determined using the CEPCI cost index. The calculation of the equipment specification was done with 4 different production capacities. The number of column height and diameter will increase when the production capacity is increased. The increase in equipment cost is directly proportional to the increase in production capacity. The greater the production capacity, the larger the height column and diameter, so the equipment cost will increase also. The equipment cost is affected by production capacity. Based on this analysis, the cost in the year 2024 will follow the model of y = 9923.8x + 2E+08, in which x is the capacity.
Combination Filtration - Ultraviolet Unit to Reduce the Organic Content and Pathogens of Domestic Wastewater For Clinical Activities R Novembrianto; Munawar; M A S Jawwad; R H A Murti; W D Lestari; M N Rhomadhoni
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 2 No. 1 (2022): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

The rise of clinical activities is one of the health care facilities that have the potential to pollute wastewater on organic compounds and especially pathogenic microorganisms. Technology in reducing organic and pathogenic content using combined ultraviolet filtration in wastewater treatment systems is one the effective method. Filtration uses activated carbon and silica with a variation of the ratio 2:3 and 3:2, while ultraviolet use a power variation of 9 watts and 15 watts. The results obtained are the best composition from the filtration process, which is a ratio of 2: 3 with the ultraviolet process using 15 watts using an exposure time of 5 hours with the remaining total coliform as much as 200 MPN/100mL. The results of this research have complied with the quality standards.
Analysis of Air Flow Rate in Bulkhead Reactors on Struvite Mineral L Edahwati; S Sutiyono; Suprihatin
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 2 No. 1 (2022): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Struvite is a white crystalline chemical known as magnesium ammonium phosphorus hexahydrate (MgNH4PO4.6H2O). Struvite is soluble in acidic conditions and slightly soluble in neutral and alkaline conditions. In industry, struvite is known as scale in pipes. Urinary stones can be called struvite because struvite crystals can form easily in the urine of animals and humans infected with ammonia organisms produced in the urine. Struvite can potentially be formed by alkaline urine and high magnesium excretion due to a high magnesium plant- based diet. The formation of struvite minerals is carried out in an insulated reactor by mixing a solution of MgCl2, NH4OH, and H3PO4 in a ratio of 1:1:1. The treatment of struvite mineral formation was carried out with a feed inlet rate of 35 ml/minute, the temperature at the reactor was carried out at 30oC while the intake air rate was carried out in the range of 0.25-1.25 liters/min. The pH of the solution was kept at a value of 9. The process was carried out until a steady state was reached. The formation of struvite minerals using an insulated column reactor was obtained at conditions of pH 9, operating temperature of 30oC and air rate of 1.25L/min.
Analysis of Combustion Temperature on the Use of B100 and B20 Fuels that Operate in the Long Term W Saputro; J Sentanuhady; L Edahwati; A K Faizin
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 2 No. 1 (2022): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

The dependence of the Indonesian people on the use of diesel fuel is still very high and is proven by the increasing consumption of diesel annually. Increasing diesel fuel consumption is a problem that must be anticipated because diesel is a fossil of fuel and non-renewable. One way to overcome this is to convert the use of fuel from fossil fuels to biofuels, such as biodiesel fuel. Biodiesel from palm oil is an option because Indonesia is the largest palm oil-producing country globally. Although theoretically, biodiesel can be used directly in diesel engines, there are very few studies related to the effects of using biodiesel and the potential for further development. Therefore, this study aims to analyze the combustion temperature of B100 and B20 fuels operated in long-term testing. This study uses two Kubota diesel engines with a cylinder volume of 376 ccs each. Each engine will be coupled with a generator to power the halogen lamps with a total power of 4000 W. The two engines will use different fuels, the first engine will be filled with B20 fuel, and the second engine will be filled with B100 fuel from palm oil. The engine rotational speed is constant at 2200 rpm, and the engine is operated for 300 hours without stopping. Every multiple of 4 hours, the combustion temperature measurement is carried out on the cylinder head, cylinder block, and exhaust gas pipe. The results show that the B100 engine produces lower combustion temperatures in the cylinder head, cylinder block, and pipe exhaust gas with 1.7%; 1.2%; and 2.7%, respectively.
Identification of Cetane Number in Solar Fuel from Pyrolysis of Plastic Waste T Towijaya; K Anam; W D Lestari
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 2 No. 1 (2022): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

The use of fuel is currently increasing, as well as the increasing number of plastic waste that comes from household and industrial waste. The need for processing plastic waste to reduce the volume of waste is very necessary. One type of plastic waste is the type of polypropylene. This type of polypropylene plastic waste is a type of waste that can be used as a basic material to produce alternative fuels in the types of diesel, gasoline, and kerosene. In this research work, a test will be carried out to determine the cetane number of this type of diesel fuel produced by the pyrolysis process, to the treatment of temperature and time variables so that a high cetane number is produced. Plastic waste processing uses pyrolysis and distillation methods to produce alternative fuels with processing temperatures of 190ºC, 200ºC, and 225ºC in 3 hours, 4 hours, and 5 hours. From testing the cetane number on the pyrolysis fuel, the cetane number from the process of making this alternative fuel itself reached the highest number, namely 64.1 at a processing time of 5 hours at a temperature of 200ºC.
Secondary Flow Phenomenon at Elbow Ducting of The Closed-Circuit Subsonic Wind Tunnel: An Experimental Study A K Faizin; Sutardi; L Edahwati; W D Lestari; N Adyono; R D Issafira; W Saputro; T P Sari
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 2 No. 1 (2022): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

The installation of elbow ducting in closed-loop wind tunnel installation will cause a pressure drop. Pressure drop was caused by flow separation and secondary flow phenomenon in the elbow ducting. The test section used in this experimental study was an octagonal elbow 90º with radius ratio (rm/Dh) = 0.6. Diameter hydraulic (Dh) elbow of 806 mm. In this study, the Reynolds number is measured based on the free flow velocity (U∞) inlet section, that is ReDh = 4.63x105. The experimental results showed the pressure drop is ΔCp = 1.46 for Re = 4.63x105. This difference in pressure value between the outer and inner (ΔCp) of the elbow ducting was caused by secondary flow. The secondary flow was observed through a horizontal velocity profile where at xi/Dh = 1.35, fluid flow was accelerated on the inner wall and decelerated on the outer wall of the ducting elbow. Then, at xi/Dh = 1.63 to xi/Dh = 2.01, there are gradual shifts of the velocity profile where the fluid flow is accelerated toward the outer wall.
Feasibility Study on Performance of Heat Exchanger-001 Refinery in Pusat Pengembangan Sumber Daya Manusia MIGAS Cepu E Saputro; R A Santoso; N N Saraswati
BIOMEJ Vol. 2 No. 1 (2022): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

PPSDM Migas Cepu is one of oil and gas industry in Indonesia. Their process requires Heat Exchanger for pre-heating purposes. The Heat Exchanger cannot work optimally because of the impurities attached to the walls shell and tube. Sometime the impurities attached to the walls of shell and tube, so it makes can’t work optimally of this industry. For that reason, the purpose of this calculation is to find out the heat efficiency during the process. Heat efficiency is the ratio of the amount of heat that moves from a high temperature fluid to a lower temperature fluid in a certain time unit which can show the performance of a Heat Exchanger. The result show that the clean overall coefficient (Uc) and design overall coefficient (Ud) are 7,4301 Btu/ft2.jam.oF and 7,2517 Btu/ft2.jam.oF. For dirt factor (Rd) are 0,0033 ft2.jamoF/Btu. The Pressure Drop are 0,0448 Psi for Tube and 0,0035 Psi for Shell. The value of the Heat Efficiency are 82,3840 %. Which mean according to the results of these parameters, it can be concluded that the Heat Exchanger-001 is still possible to operate.
Cost Estimation of Distillation Unit at Dimethyl Ether Plant Based on Production Capacity E Saputro; B A Sanjoyo; W Ramadhanti
BIOMEJ Vol. 2 No. 1 (2022): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The aim of this research is to determine the impact of production capacity in determining of distillation cost estimation on the dimethyl ether plant design. The estimation of equipment costs are determined using the CEPCI cost index. The calculation of the equipment specification was done with 4 different production capacities. The number of column height and diameter will increase when the production capacity is increased. The increase of the equipment cost is directly proportional to the increase of production capacity. The greater the production capacity, the larger the height column and diameter, so the equipment cost will increase also. The equipment cost is affected by production capacity. Based on this analysis, the cost in the year of 2024 will follow the model of y = 9923.8x + 2E+08, which x is the capacity.
Combination Filtration - Ultraviolet Unit to Reduce the Organic Content and Pathogens of Domestic Wastewater For Clinical Activities R Novembrianto; Munawar; M A S Jawwad; R H A Murti; W D Lestari; M N Rhomadhoni
BIOMEJ Vol. 2 No. 1 (2022): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The rise of clinical activities is one of the health care facilities that have the potential to pollute wastewater on organic compounds and especially pathogenic microorganisms. Technology in reducing organic and pathogenic content using combined ultraviolet filtration in wastewater treatment systems is one the effective method. Filtration uses activated carbon and silica with a variation of the ratio 2:3 and 3:2, while ultraviolet use a power variation of 9 watts and 15 watts. The results obtained are the best composition from the filtration process, which is a ratio of 2: 3 with the ultraviolet process using 15 watts using an exposure time of 5 hours with the remaining total coliform as much as 200 MPN/100mL. The results of this research have complied with the quality standards.

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